Smoke, fire, and gas detector



FIG. 1 is a perspective view of a smoke, fire, and gas detector showingthe new design in an enclosed configuration; and,

FIG. 2 is a perspective view of a smoke, fire, and gas detector showingthe new design in an open configuration, and showing the internalcomponents.

The ornamental design for a smoke, fire, and gas detector, as shown anddescribed.